Well lets for example consider you are general electric. An exploiter of adult websites at some point decides to do something with your brand name and brand associations. Lets leave the matter if this is legal or not aside. Maybe the exploiter would even publish content in a corporate setting.
First of all this would be kinda weird for GE's employees and second of all I don't think a company with a respected and established brand wants people to have other associations with the brand other then the ones they advertise for. In the case of such big established company I would not be surprised that they immediately registered ge.xxx and generalelectric.xxx and just leave the page blank or reserved.